Patent SG-11201906448Q-A (SG)
Title: Lubricants with overbased calcium and overbased magnesium detergents and method for improving low-speed pre-ignition
Inventor: Fletcher Kristin
IPC: C10M163/00
Filed: 2017-11-09
Abstract: INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date 26 July 2018 (26.07.2018) WIPO I PCT omit °nolo offi ono iflo oimIE (10) International Publication Number WO 2018/136138 Al (51) International Patent Classification: TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, C/OM 163/00 (2006.01) KM, ML, MR, NE, SN, TD, TG). (21) International Application Number: PCT/US2017/060959 (22) International Filing Date: 09 November 2017 (09.11.2017) (25) Filing Language: English (26) Publication Language: English (30) Priority Data: 15/409,516 18 January 2017 (18.01.2017) US (71) Applicant: AFTON CHEMICAL CORPORATION [US/US]; 500 Spring Street, Richmond, Virginia 23219 (US). (72) Inventors: FLETCHER, Kristin; 2616 Cradle Hill Court, Midlothian, Virginia 23112 (US). DINGWELL, Lisa; 1619 Porters Mill Lane, Midlothian, Virginia 23114 (US). (74) Agent: DUNLEAVY, Kevin J.; Mendelsohn Dunleavy, 1500 John F. Kennedy Blvd., Suite 312, Philadelphia, PA 19102 (US). (81) Designated States (unless otherwise indicated, for every kind of national protection available): AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW. (84) Designated States (unless otherwise indicated, for every kind of regional protection available): ARIPO (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, Published: — with international search report (Art. 21(3)) with amended claims (Art. 190)) (54) Title: LUBRICANTS WITH OVERBASED CALCIUM AND OVERBASED MAGNESIUM DETERGENTS AND METHOD FOR IMPROVING LOW-SPEED PRE-IGNITION co (57) : A lubricating oil composition and method of operating a boosted internal combustion engine. The lubricating oil includes greater than 50 wt.% of a base oil, one or more overbased calcium-containing detergents, one or more overbased magnesium-containing detergents and one or more molybdenum compounds and leads to a more than 60% reduction in LSPI compared to the LSPI of a reference oil and passes the Ball Rust Test. The ratio of wt% calcium from the overbased detergents to wt.% of magnesium from the overbased detergents is less than 11.9. A ratio of total ppm of magnesium to total TBN of the lubricating oil in mg KOH/g is greater 00 than 19. A ratio of the total ppm of calcium to the total TBN of the lubricating oil is less than 222. The oil and method may reduce low- O speed pre-ignition events in a boosted internal combustion relative to commercially available lubricating oils. C